Rawhide pinion.



' the metallic portions of the pinion.

. revolubly on'its shaft.

UNITED STATES Patented August 25, 1903,

I PATENT OFFICE.

CHARLES S: GRANNIS, OF SYRACUSE, NEW YORK, ASSIGNOR TO NEW PROCESSRAVVHIDE COMPANY, OF SYRACUSE, NEW YORK, A COR- PORATION on NEW :YORK.

RAWHIDE PINION.

SPECIFICATION forming part of Letters Patent No. 737,223, dated August25, 1903. Application filed December is 1902. Serial No. 135,693. (Nomodel) Z0 all whom it may concern:

Be it known that I, CHARLES S. GRANNIS, a citizen of the United States,and a resident of Syracuse, in the county of Onondaga, in the State ofNew York, have invented new and useful Improvements in Rawhide Pinions,of which the following, taken in connection with the accompanyingdrawings, is a full, clear, and exact description.

This invention relates to the class of wheels, especially pinions, whichhavetheir body or main portion formed of rawhide or othersuitablenon-metallic material and confined between metallic heads or collarsrigidly secured to the ends of said body. In the manufacture of saidclass of wheels or pinions it has been the practice to fasten themetallic heads or collars to the non-metallic body by means of bolts orrivets passing through the heads or collars and intermediate body. Ithas been found that such construction caused considerable weakening ofthe heads or collars, especially when of small diameter, by theperforations thereof required for the reception of the aforesaid boltsor rivets.

The object of this invention is to obviate said defect and also reducethe cost of manufacture of the wheel or pinion; and to that end theinvention consists in the novel construction and combination of thecomponent parts hereinafter described and as illustrated in the annexeddrawings,'in which- Figure 1 is an end view of a pinion constructed inaccordance with my invention. Fig. 2 is a longitudinal section on line XX in Fig. 1. Fig. 3 is a detached side view of Fig. 4 is an end view ofthe hub. Fig. 5 is a face view of the collar which is formed separatefrom the hub, and Fig. 6 is a transverse section on line Y Y in Fig. 5.

The pinion shown in said drawings is of the species which is designed tobe mounted a represents the tubular hub of said pinion, which hub isformed of metal and is provided intermediate its ends with a rigidcollar 1), preferably formed integral with the hub.

0 denotes the rawhide or other non-metallic body which is mounted on thehub and abuts against the side of the collar 1).

1 denotes the collar which is mounted on the end of the hub and abutsagainst the adjacent end of the body 0. This collar dis fastened to thehub independently of the wheelbody 0 by means of clenchers e, formed onthe end of the hub and sunken into indentations f; formed in the outerface of the collar adjacent to the hub. The said indentations may be ofany suitable shape to afford a secure hold to the aforesaid clenchers,which are formed by upsetting outward the end of the hub after thecollar 01 is placed in its requisite position contiguous to'the rawhidebody.

The outer face of the collar d is subsequently planed'or suitablyfinished to present'a smooth face, as represented in. Figs. 1 and 2 ofthe drawings.

To look the rawhide or non-metallic body from turning upon the hub a, 1form the exterior of said hub with parallel longitudinal.

ribs hh extending from'the collar 1) to the end of the hub and shaped'topresent longitudinal cutting edges 11, extending from end to erid of theribs. In pressing the rawhide body 0 onto the hub the aforseaid ribs cuttheir way in the bore of said body and form therein grooves, whichinterlock with the ribs,',and thus prevent the rawhide or non-' metallicbody from slipping circu mferentially on the hub. The collar d is formedwith grooves or notches Z l coinciding with the ribs h h, which passthrough said grooves or notches, and thuslikewi'se lock said collarcircumferentially on the hub.

In the manufacture of the species of pinion shown in the annexeddrawings the collars b and cl are of the same diameter as the body 0.The teeth of the pinion are cut through said collars and intermediatebody after the said parts are firmly uni'ted'in the manner hereinbeforedescribed.

I wish it to be understood that I do not limit my invention to itsapplication to a body composed'of rawhide, as said body may be com-'posed of some other suitable non-metallic material.

What I claim as m y invention is-- 1. A Wheel composed of a metallic hubformed with clenchers, a non-metallic body mounted on said hub, a collarfixed to the hub and abutting againstone side of said body, and a collarmounted on the hub and fastened thereto by engagement with the aforesaidclenchers.

2. A Wheel composed of a metallic hub formed with clenchers and with acollar, a non-metallic body mounted on the hub and abutting against saidcollar, and a collar abutting against the opposite end of the said bodyand formed in its outer face with indentations having sunken therein theafore said clenchers.

3. A wheel composed of a metallic hub formed with a collar and withlongitudinal ribs at one side of said collar, a non-metallic bodyabutting against said side of the collar and locked from turning byengagement with the aforesaid ribs, and a collar mounted on the hubadjacent to the opposite end of said body and fastened directly to thehub independently of the aforesaid wheel-body as set forth.

4. A wheel. composed of a metallic hub with clenchers and formed with acollar and parallel longitudinal ribs extending from said collar to oneend of the hub, a non-metallic body abutting against said collar andlocked from turning on the hub by engagement of the ribs with the boreof said body, a collar mounted on the end of the hub and bearing onthe-Wheel-body and formed with grooves interlocked with the aforesaidribs, and with indentations in its outer face adjacent to the hub andhaving the aforesaid clenchers countersunk in said indentations, as setforth and shown.

5. A wheel composed of a metallic hub with clenchers and formed with acollar and parallel longitudinal ribs having cutting edges extendinglengthwise of the ribs, a rawhide body abutting against said collar andhaving the aforesaid ribs sunken in the surface of the bore of saidbody, a collar mounted on the end of the hub adjacent to the rawhidebody and formed with grooves interlocked with the ribs of the hub andprovided in its outer face With indentations adjacentto the hub andhaving the aforesaid clenchers countersunk in said indentations, as setforth.

CHARLES S. GRANNIS.

Witnesses J. J. LAAss, F. L. KENT.

